Join in expert discussion on special and general relativity discussion. Relativity is the dependence of various physical phenomena on relative motion of the observer and the observed objects.
Threads
Graduate What are the best free software options for visualizing relativity concepts?
- ehrenfest
- · Replies 5 ·
Graduate Question about going faster than speed of light
- MagikRevolver
- · Replies 18 ·
Graduate Relativistic mechanical index of refraction
- Helios
- · Replies 2 ·
High School Understanding Light: Frequency vs Wavelength in Different Mediums
- informtohagrid
- · Replies 8 ·
Undergrad Understanding the Energy of Light: Unraveling the Mystery Behind 1/2mc^2
- informtohagrid
- · Replies 9 ·
Graduate Speed of light - can it be exceeded?
- AzureNight
- · Replies 26 ·
Graduate Calculating Relativistic Rocket Performance
- trilex1
- · Replies 4 ·
Undergrad Understanding Relativity to Explaining Time Dilation
- multiverse93
- · Replies 11 ·
Undergrad Light vs Light: What Does it Look Like?
- Alex48674
- · Replies 5 ·
Undergrad Information traveling faster than light?
- Joza
- · Replies 5 ·
Graduate Differential Geometry/Topology in GR: Research Needed?
- andytoh
- · Replies 1 ·
Graduate Christoffel Coefficient Defined: Exploring Beyond the Metric Tensor
- CPL.Luke
- · Replies 6 ·
Graduate How to Prove Lorentz Invariance of Volume Element in Momentum Space?
- Leeds student
- · Replies 14 ·
Graduate Can we slow down a photon's velocity to 0?
- Skhandelwal
- · Replies 8 ·
Graduate Inertial dependence upon local matter
- yogi
- · Replies 7 ·
Undergrad Defining Special Relativity & General Relativity
- Mattara
- · Replies 35 ·
Graduate Understanding SR/GR: Tips and Tricks for Intuitive Comprehension
- BosonJaw
- · Replies 3 ·
Graduate Relative speed of tachyons greater than c?
- menager31
- · Replies 12 ·
Graduate What would happen if a spinning space station reached the speed of light?
- BulletRide
- · Replies 4 ·
Graduate Is the Spacetime Interval Truly Invariant Across Different Reference Frames?
- kaotak
- · Replies 17 ·
Graduate Twin Paradox: Why Twin On Ship Ages Slower?
- patl
- · Replies 9 ·
Graduate General newbie questions regarding the speed of light
- newb
- · Replies 6 ·
Graduate Koide and Kodama on relativistic brownian motion
- marcus
- · Replies 1 ·
Graduate Dude, where's my anti-graviton?
- LouisWu
- · Replies 7 ·
Graduate Can Kindergarten STR Math Solve Polchinski's Paradox?
- eigenzeitt
- · Replies 3 ·
Graduate C independent of observer and emitter
- alvaros
- · Replies 7 ·
Graduate How would you observe outside events on a spacecraft?
- Energize
- · Replies 12 ·
Graduate How can we calculate a rest mass?
- Denton
- · Replies 4 ·
Graduate About the Non-paradoxicality of the Twin Paradox
- NanakiXIII
- · Replies 9 ·
Graduate Thought Experiment on ToR postulate-1
- kannank
- · Replies 4 ·
Graduate Schwarzchild solution and orbit precession
- oldman
- · Replies 4 ·
Graduate Gravity and Photon Relationship: Understanding Red and Blue Shift
- journeytospace
- · Replies 5 ·
Graduate How to get inverse Lorentz tranformation from direct Lorentz transformation
- Odyssey
- · Replies 13 ·
Undergrad Relativity: Inertial vs. Coordinate Systems Explained
- gdpudasaini
- · Replies 3 ·
Graduate High Energy Gamma Rays Go Slower Than the Speed of Light?
- SF
- · Replies 13 ·
Graduate Can SR Postulates 1 and 2 Be Derived from Each Other?
- ivan
- · Replies 7 ·
High School Understanding Time Dilation: How Fast Do You Have to Go?
- afbla
- · Replies 193 ·
High School Does Heating a Battery Affect Its Weight and Energy Storage?
- bassplayer142
- · Replies 3 ·
Graduate How can empty space expand? (Reality behind the GR equations.)
- Robert100
- · Replies 38 ·
Graduate Special Relativity GRE Question
- CreekDog
- · Replies 5 ·
Graduate Special relativity - observing spinning objects
- Mentz114
- · Replies 4 ·
Graduate Michelson- Morley's experiment
- hunarahmad
- · Replies 47 ·
Graduate Reference frames for photon collisions
- hartin
- · Replies 5 ·
Graduate What is the gauge group of general relativity?
- kakarukeys
- · Replies 8 ·
Graduate Gravitational Interaction of Relatively Moving Bodies: Does Aberration Apply?
- oldman
- · Replies 9 ·
Undergrad Why do like charges and poles repel in the long run?
- Denton
- · Replies 3 ·
Graduate Mass & Gravity of Photon at Light Speed
- matteo16
- · Replies 3 ·
Graduate Derivation of Lorentz Transformation
- kaotak
- · Replies 16 ·
Graduate Relativistic De Broglie Relation
- CoreyJKelly
- · Replies 2 ·
Reforming Society's Perception: The Relativity of Age in Relationships
- animalcroc
- · Replies 7 ·
Graduate Help with a thought experiment.
- MCarroll
- · Replies 6 ·
Graduate Silly question about special relativity
- paat
- · Replies 13 ·
Graduate Simple lorentz trans. question
- Ja4Coltrane
- · Replies 5 ·
High School Relativity: The Most Beautiful Theory in Physics
- gdpudasaini
- · Replies 17 ·
Undergrad Photons and Relativity: A Question of Speed and Time
- admd1
- · Replies 4 ·
Graduate Relativistic Orbits: Can Mass Increase Keep Planets Together?
- Meatbot
- · Replies 2 ·
Graduate Why doesn't DEceleration add mass as well?
- Meatbot
- · Replies 14 ·
Undergrad Electric field and gravitational field
- sterproj
- · Replies 2 ·
Graduate Is there something special about standing on a planet?
- Bob Walance
- · Replies 5 ·
Graduate How Would Gravity Behave with a Four-Component Mass Current as Its Source?
- jostpuur
- · Replies 23 ·
High School What Does "Twin B Being 3 Years Younger" Mean? An Explanation from My Cousin
- Remnant
- · Replies 3 ·
Graduate What Happens to Time on a Moving Vehicle?
- Raul_Duke21
- · Replies 20 ·
Graduate Group velocity and speed of information
- OOO
- · Replies 8 ·
Graduate What kind of a bomb? answer:the exploding kind.
- MathematicalPhysicist
- · Replies 9 ·
Graduate Changing of one of the previous topics
- dasher
- · Replies 8 ·
Graduate Speed of Light vs Refractive Index: Does It Violate Relativity?
- dasher
- · Replies 4 ·
Graduate The runner on the train paradox.
- MathematicalPhysicist
- · Replies 7 ·
Graduate Spacetime - it warps, it curves, but can't expand?
- dilletante
- · Replies 15 ·
Undergrad Why can't a photon exceed the speed of light?
- Holocene
- · Replies 18 ·
Undergrad Special relativity & length contraction
- Denton
- · Replies 3 ·
Graduate What Happens to Time When Traveling Near the Speed of Light?
- hamza
- · Replies 47 ·
Graduate Can someone give me a good plausible answer
- Ian
- · Replies 37 ·
Graduate Tensors: Lorentz vs Galilean invariance
- cesiumfrog
- · Replies 1 ·
Graduate Is the Universe a Spiral Cone Leading to a New Big Bang?
- Wonderballs
- · Replies 5 ·
Graduate What is the Meaning of 4-Momenta and How is it Used?
- ManyNames
- · Replies 2 ·
Graduate Is There Physical Significance to Imaginary Dimensions in Space-Time?
- SpitfireAce
- · Replies 45 ·
Undergrad Understanding the Relationship Between Moving Electrons and Magnetic Fields
- roger
- · Replies 18 ·
Graduate Electric / magnetic field transformations
- CompuChip
- · Replies 3 ·
Undergrad Modern Physics: Center of Momentum Speed
- Grieverheart
- · Replies 3 ·
Graduate Distance & Relativity: Does Light Experience Distance?
- Cluelessluke
- · Replies 1 ·
Graduate Experimental proofs of increase of mass with v
- alvaros
- · Replies 2 ·
Undergrad What is the true nature of time and its relationship to space?
- nickto21
- · Replies 12 ·
Graduate What Happens at the Event Horizon of a Black Hole?
- tabchouri
- · Replies 11 ·
Graduate Thought Experiment - Measuring speed of light
- Xori
- · Replies 11 ·
Graduate How Do We Know Gravity Is A Force?
- mkcrow
- · Replies 6 ·
Graduate Variations, Euler-Lagrange, and Stokes
- haushofer
- · Replies 6 ·
Graduate Understanding the Robertson-Walker Metric with Curvature Normalization
- Ratzinger
- · Replies 1 ·
Graduate Dr. Robert Forward's curvature gradient detector
- Bob Walance
- · Replies 4 ·
Graduate Does Light Travel Differently in Einstein's Train Experiment?
- DaNiEl!
- · Replies 1 ·
Graduate How to measure the lack of external force during free fall?
- Bob Walance
- · Replies 6 ·
Graduate Does the shape of the curve, that is produced in space by a mass, have a name ?
- TheDinosaur
- · Replies 6 ·
Graduate Time does not run slower or faster
- birulami
- · Replies 70 ·
Graduate Approximation of the FE feat. loose notation
- Spinny
- · Replies 1 ·
Graduate Infinite Acceleration: What Happens at the Speed of Light?
- Xori
- · Replies 11 ·
Undergrad Phantastic Photons: Rate of Light Emission & Laser Images
- Wonderballs
- · Replies 2 ·
Graduate Twin Paradox: Is Time Speeding Up?
- Xori
- · Replies 7 ·
Graduate Is inertia relative or absolute?
- Eribon
- · Replies 12 ·
Graduate Time Dilation: The Traveller's Perspective
- Destrio
- · Replies 5 ·
Graduate What Mathematical Knowledge is Needed to Understand Einstein's Field Equations?
- implicit
- · Replies 10 ·
Graduate Speed of photons inside a very powerful gravitational wave
- ensabah6
- · Replies 7 ·